The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1981
Filed:
Dec. 21, 1979
Endre Palosi, Budapest, HU;
Gergely Heja, Budapest, HU;
Dezso Korbonits, Budapest, HU;
Pal Kiss, Budapest, HU;
Csaba Gonczi, Budapest, HU;
Judit Cser nee Kun, Budapest, HU;
Ida Szvoboda nee Kauzel, Budapest, HU;
Gabor Kovacs, Budapest, HU;
Gabor Szabo, Budapest, HU;
Tamas Kallay, Budapest, HU;
Laszlo Ledniczky, Budapest, HU;
Chinoin Gyogyszer es Vegyeszeti Termekek Gyara RT, Budapest, HU;
Abstract
3-Phenoxybenzene derivatives are prepared by a method which comprises the steps of(a) chlorinating benzaldehyde with chlorine gas in the presence of a hydrocarbon and a Lewis acid catalyst to obtain 3-chlorobenzaldehyde; (b) reacting the 3-chlorobenzaldehyde with ethylene glycol to obtain 2-(3-chlorophenyl)-1,3-dioxolane; (c) etherifying said dioxolane with an alkali phenolate to yield the intermediate 2-(3-phenoxyphenyl)-1,3-dioxolane and converting this intermediate to the corresponding aldehyde, cyanohydrin, sulfonic acid salt or oxime derivative.